Ultrafast electron transfer at the interface of gold nanoparticles and methylene blue molecular adsorbates
Dillon Contreras, Joie M. Yuson, Zeynep Ezgi Eroglu, Pouya Bahrami, Hoda Sadeghi Hadad Zavareh, Abdelaziz Boulesbaa
Abstract
anion absorption. Furthermore, despite the fact that the concentration of Au-NPs in the nanocomposite sample is the same as that in the Au-NPs solution, the initial intensity of the LSPR depletion signal was about six times weaker than that in the Au-NPs sample. These observations suggest that electron transfer from excited Au-NPs to MB adsorbates took place on a time-scale that is shorter than the ∼50 fs experimental temporal resolution.
Topics & Concepts
Methylene blueColloidal goldElectron transferUltrashort pulseNanoparticleMethylenePhotochemistryInterface (matter)ChemistryChemical physicsMaterials scienceNanotechnologyChemical engineeringMoleculeOrganic chemistryOpticsPhysicsCatalysisGibbs isothermLaserEngineeringPhotocatalysisGold and Silver Nanoparticles Synthesis and ApplicationsNanocluster Synthesis and ApplicationsMolecular Junctions and Nanostructures